Google Professional-Cloud-Network-Engineer Exam With Confidence Using Practice Dumps

The correct answer is D because it allows you to use your own public IP addresses in Google Cloud without disrupting the platform or requiring your customers to update their DNS records. Option A is incorrect because it involves changing the IP addresses and notifying the customers, which can cause disruption and errors. Option B is incorrect because it does not use live migration, which is a feature that lets you control when Google starts advertising routes for your prefix. Option C is incorrect because it does not involve bringing your own IP addresses, but rather using Google-provided IP addresses.

To block traffic based on BGP ASN, you need to use Cloud Armor network edge security policies. Backend security policies protect backend services (like those behind an external HTTP(S) Load Balancer), but for traffic directly to Compute Engine instances with public IPs, you need a network edge security policy. Firewall policies operate at the VPC level and do not have the capability to filter based on BGP ASN. The —network-src-asns parameter is specifically used with Cloud Armor network edge security policies to filter traffic based on the source ASN.

Exact Extract:

"Cloud Armor network edge security policies can protect external IP addresses of virtual machine (VM) instances and load balancers. They support rules that allow or deny traffic based on various criteria, including source autonomous system numbers (ASNs) using the --network-src-asns parameter."

"Network edge security policies are designed for traffic destined for external IP addresses of Google Cloud resources that are not behind an external HTTP(S) load balancer, such as Compute Engine instances with public IP addresses."Reference: Google Cloud Armor Documentation - Network edge security policies overview